428229367646 has 16 divisors (see below), whose sum is σ = 644962977024. Its totient is φ = 213243479064.

The previous prime is 428229367613. The next prime is 428229367669. The reversal of 428229367646 is 646763922824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42185 + ... + 926411.

It is an arithmetic number, because the mean of its divisors is an integer number (40310186064).

Almost surely, 2^428229367646 is an apocalyptic number.

428229367646 is a deficient number, since it is larger than the sum of its proper divisors (216733609378).

428229367646 is a wasteful number, since it uses less digits than its factorization.

428229367646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885215.

The product of its digits is 41803776, while the sum is 59.

The spelling of 428229367646 in words is "four hundred twenty-eight billion, two hundred twenty-nine million, three hundred sixty-seven thousand, six hundred forty-six".